Solve the problem.How long will it take for prices in the economy to double at a 9% annual inflation rate? (Round to the nearest year.)
A. 23 yr
B. 13 yr
C. 8 yr
D. 7 yr
Answer: C
Mathematics
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For which value of x does 
reach a maximum? Restrict your attention to the horizontal span of 0 to 12. Round your answer to two decimal places.
?
A. 1.55 B. 3.17 C. 0.06 D. 7.09
Mathematics
Determine the phase shift of the function.y = 2 sin (2?x - 3)
A. 
B. 
C. - 
D. -3
Mathematics
Evaluate the indicated power of i.i-42
A. -1 B. -i C. 1 D. i
Mathematics
Solve the problem.The polynomial function 
represents the yearly income (or loss) from a real estate investment, where t is time in years. After what year does income begin to decline?
A. 7.5 B. 17 C. 11.33 D. 8.5
Mathematics